This is an idea to give rituals some more flavor and fun, but its less about the mechanics and more about the flavor (meaning it requires more DM balancing where normally I go for hard coded balance).
Here are some examples.
Comprehend Languages: If you have not spoken a single word in the last 24 hours, the casting of this ritual is free.
Discern Lies: If you tell someone an important secret truth about yourself, the ritual requires no components and you gain a +5 to the roll.
Hand of Fate: If you are willing to offer the ritual a small part of your destiny (DM can force one reroll of a d20 roll within the next week), the ritual is free.
Speak with Dead: If a loved one is involved in the ritual, the ritual gains a +10 bonus to the religion check.
Here are some examples.
Comprehend Languages: If you have not spoken a single word in the last 24 hours, the casting of this ritual is free.
Discern Lies: If you tell someone an important secret truth about yourself, the ritual requires no components and you gain a +5 to the roll.
Hand of Fate: If you are willing to offer the ritual a small part of your destiny (DM can force one reroll of a d20 roll within the next week), the ritual is free.
Speak with Dead: If a loved one is involved in the ritual, the ritual gains a +10 bonus to the religion check.